The Utra nation was the only force that the Hive could target.
The Papral nation knew about the existence of a fourth force on the new continent, and the Shandal Empire was about to be attacked by two big countries, targeting the Elbas family was the only option that the cultivators from the Hive had.
Also, the southern coast was connected with the territories under the control of the Royals, the Hive had to weaken them if it wanted to maintain control over the lava lake.
The lava lake was the most crucial territory discovered by the Hive, it was a place that contained traces left by divine beings after all, nothing could match the value of that place.
Two weeks passed after Elder Austin shared the information concerning the attack on the Empire, the Papral nation didn't contact the Hive in that period.